Home / 66,610.89-99,923.05-21,630.36

Finding the Fourth Proportional to 66,610.89, 99,923.05 and 21,630.36

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Solution

The fourth proportional to 66,610.89, 99,923.05 and 21,630.36 is: 32,447.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,610.89 : 99,923.05 = 21,630.36 : x
  2. Step 2: Convert to fraction form
    66,610.89/99,923.05 = 21,630.36/x
  3. Step 3: Cross multiply
    66,610.89x = 99,923.05 × 21,630.36
  4. Step 4: Simplify right side
    66,610.89x = 2,161,371,543.80
  5. Step 5: Solve for x
    x = 2,161,371,543.80/66,610.89
  6. Step 6: Final answer
    x = 32,447.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.